From 1d724a2f1b2c3f0cba4975784a808482e0631adf Mon Sep 17 00:00:00 2001 From: Matthew Brost Date: Wed, 5 Mar 2025 17:26:26 -0800 Subject: [PATCH] drm/xe: Retry BO allocation TTM doesn't support fair eviction via WW locking, this mitigated in by using retry loops in exec and preempt rebind worker. Extend this retry loop to BO allocation. Once TTM supports fair eviction this patch can be reverted. v4: - Keep line break (Stuart) Signed-off-by: Matthew Brost Reviewed-by: Gwan-gyeong Mun Reviewed-by: Stuart Summers Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-2-matthew.brost@intel.com --- drivers/gpu/drm/xe/xe_bo.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c index 25761924a8b4..9adc63175e69 100644 --- a/drivers/gpu/drm/xe/xe_bo.c +++ b/drivers/gpu/drm/xe/xe_bo.c @@ -2273,6 +2273,7 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, struct xe_file *xef = to_xe_file(file); struct drm_xe_gem_create *args = data; struct xe_vm *vm = NULL; + ktime_t end = 0; struct xe_bo *bo; unsigned int bo_flags; u32 handle; @@ -2344,6 +2345,10 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, vm = xe_vm_lookup(xef, args->vm_id); if (XE_IOCTL_DBG(xe, !vm)) return -ENOENT; + } + +retry: + if (vm) { err = xe_vm_lock(vm, true); if (err) goto out_vm; @@ -2357,6 +2362,8 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data, if (IS_ERR(bo)) { err = PTR_ERR(bo); + if (xe_vm_validate_should_retry(NULL, err, &end)) + goto retry; goto out_vm; } -- 2.50.1